The qcdm wwan device does not cope well with writing single bytes,
while it does not have any issue if longer chunks are written.
Fix qcdm_send accordingly, since it should not hurt the previously
supported devices.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
modepref.c: In function ‘main’:
modepref.c:539:11: warning: passing argument 1 of ‘putenv’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
539 | putenv ("QCDM_DEBUG=1");
| ^~~~~~~~~~~~~~
In file included from modepref.c:21:
/usr/include/stdlib.h:647:26: note: expected ‘char *’ but argument is of type ‘const char *’
647 | extern int putenv (char *__string) __THROW __nonnull ((1));
| ~~~~~~^~~~~~~~
modepref.c: In function ‘print_buf’:
modepref.c:46:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Wsign-compare]
46 | for (i = 0; i < len; i++) {
| ^
modepref.c: In function ‘qcdm_wait_reply’:
modepref.c:167:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘long unsigned int’ [-Wsign-compare]
167 | } while (total < sizeof (readbuf));
| ^
Daniele Palmas
Aleksander Morgado
Dan Williams